84/-168 when expressed as a rational number with dominator 28 is
Answers
Answer:
Given (-15/-28)
Multiplying both numerator and denominator we can rational number with positive denominator.
(-15/-28) = (-15/-28) × (-1/-1)
= (15/28)
(ii) Given (6/-9)
Multiplying both numerator and denominator we can rational number with positive denominator.
(6/-9) = (6/-9) × (-1/-1)
= (-6/9)
(iii) Given (-28/-11)
Multiplying both numerator and denominator we can rational number with positive denominator.
(-28/-11) = (-28/-11) × (-1/-1)
= (28/11)
(iv) Given (19/-7)
Multiplying both numerator and denominator we can rational number with positive denominator.
(19/-7) = (19/-7) × (-1/-1)
= (-19/7)
2. Express (3/5) as a rational number with numerator:
(i) 6
(ii) -15
(iii) 21
(iv) -27
Solution:
(i) Given (3/5)
To get numerator 6 we have to multiply both numerator and denominator by 2
Then we get, (3/5) × (2/2) = (6/10)
Therefore (3/5) as a rational number with numerator 6 is (6/10)
(ii) Given (3/5)
To get numerator -15 we have to multiply both numerator and denominator by -5
Then we get, (3/5) × (-5/-5)
= (-15/-25)
Therefore (3/5) as a rational number with numerator -15 is (-15/-25)
(iii) Given (3/5)
To get numerator 21 we have to multiply both numerator and denominator by 7
Then we get, (3/5) × (7/7)
= (21/35)
Therefore (3/5) as a rational number with numerator 21 is (21/35)
(iv) Given (3/5)
To get numerator -27 we have to multiply both numerator and denominator by -9
Then we get, (3/5) × (-9/-9)
= (-27/-45)
Therefore (3/5) as a rational number with numerator -27 is (-27/-45)